html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
  margin: 0;
  padding: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
  box-sizing: border-box;
}
/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section {
  display: block;
}
html {
   line-height: 1.15; /* 1 */
   -webkit-text-size-adjust: 100%; /* 2 */
 }
 
 /* Sections
    ========================================================================== */
 
 /**
  * Remove the margin in all browsers.
  */
 
 body {
   margin: 0;
   background-color: #f7f7f7;
   font-family: 'Microsoft YaHei';
 }
 
 /**
  * Render the `main` element consistently in IE.
  */
 
 main {
   display: block;
 }
 
 /**
  * Correct the font size and margin on `h1` elements within `section` and
  * `article` contexts in Chrome, Firefox, and Safari.
  */
 
 
 /* Grouping content
    ========================================================================== */
 
 /**
  * 1. Add the correct box sizing in Firefox.
  * 2. Show the overflow in Edge and IE.
  */
 
 hr {
   box-sizing: content-box; /* 1 */
   height: 0; /* 1 */
   overflow: visible; /* 2 */
 }
 
 /**
  * 1. Correct the inheritance and scaling of font size in all browsers.
  * 2. Correct the odd `em` font sizing in all browsers.
  */
 
 pre {
   font-family: monospace, monospace; /* 1 */
   font-size: 1em; /* 2 */
 }
 
 /* Text-level semantics
    ========================================================================== */
 
 /**
  * Remove the gray background on active links in IE 10.
  */
 
 a {
   background-color: transparent;
   text-decoration: none;
   color: #303133;
 }

 
 /**
  * 1. Remove the bottom border in Chrome 57-
  * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
  */
 
 abbr[title] {
   border-bottom: none; /* 1 */
   text-decoration: underline; /* 2 */
   text-decoration: underline dotted; /* 2 */
 }
 
 /**
  * Add the correct font weight in Chrome, Edge, and Safari.
  */
 
 b,
 strong {
   font-weight: bolder;
 }
 
 /**
  * 1. Correct the inheritance and scaling of font size in all browsers.
  * 2. Correct the odd `em` font sizing in all browsers.
  */
 
 code,
 kbd,
 samp {
   font-family: monospace, monospace; /* 1 */
   font-size: 1em; /* 2 */
 }
 
 /**
  * Add the correct font size in all browsers.
  */
 
 small {
   font-size: 80%;
 }
 
 /**
  * Prevent `sub` and `sup` elements from affecting the line height in
  * all browsers.
  */
 
 sub,
 sup {
   font-size: 75%;
   line-height: 0;
   position: relative;
   vertical-align: baseline;
 }
 
 sub {
   bottom: -0.25em;
 }
 
 sup {
   top: -0.5em;
 }
 
 /* Embedded content
    ========================================================================== */
 
 /**
  * Remove the border on images inside links in IE 10.
  */
 
 img {
   display: block;
   border-style: none;
 }
 
 /* Forms
    ========================================================================== */
 
 /**
  * 1. Change the font styles in all browsers.
  * 2. Remove the margin in Firefox and Safari.
  */
 
 button,
 input,
 optgroup,
 select,
 textarea {
   font-family: inherit; /* 1 */
   font-size: 100%; /* 1 */
   line-height: 1.15; /* 1 */
   margin: 0; /* 2 */
 }
 
 /**
  * Show the overflow in IE.
  * 1. Show the overflow in Edge.
  */
 
 button,
 input { /* 1 */
   overflow: visible;
 }
 
 /**
  * Remove the inheritance of text transform in Edge, Firefox, and IE.
  * 1. Remove the inheritance of text transform in Firefox.
  */
 
 button,
 select { /* 1 */
   text-transform: none;
 }
 
 /**
  * Correct the inability to style clickable types in iOS and Safari.
  */
 
 button,
 [type="button"],
 [type="reset"],
 [type="submit"] {
   -webkit-appearance: button;
 }
 
 /**
  * Remove the inner border and padding in Firefox.
  */
 
 button::-moz-focus-inner,
 [type="button"]::-moz-focus-inner,
 [type="reset"]::-moz-focus-inner,
 [type="submit"]::-moz-focus-inner {
   border-style: none;
   padding: 0;
 }
 
 /**
  * Restore the focus styles unset by the previous rule.
  */
 
 button:-moz-focusring,
 [type="button"]:-moz-focusring,
 [type="reset"]:-moz-focusring,
 [type="submit"]:-moz-focusring {
   outline: 1px dotted ButtonText;
 }
 
 /**
  * Correct the padding in Firefox.
  */
 
 fieldset {
   padding: 0.35em 0.75em 0.625em;
 }
 
 /**
  * 1. Correct the text wrapping in Edge and IE.
  * 2. Correct the color inheritance from `fieldset` elements in IE.
  * 3. Remove the padding so developers are not caught out when they zero out
  *    `fieldset` elements in all browsers.
  */
 
 legend {
   box-sizing: border-box; /* 1 */
   color: inherit; /* 2 */
   display: table; /* 1 */
   max-width: 100%; /* 1 */
   padding: 0; /* 3 */
   white-space: normal; /* 1 */
 }
 
 /**
  * Add the correct vertical alignment in Chrome, Firefox, and Opera.
  */
 
 progress {
   vertical-align: baseline;
 }
 
 /**
  * Remove the default vertical scrollbar in IE 10+.
  */
 
 textarea {
   overflow: auto;
 }
 
 /**
  * 1. Add the correct box sizing in IE 10.
  * 2. Remove the padding in IE 10.
  */
 
 [type="checkbox"],
 [type="radio"] {
   box-sizing: border-box; /* 1 */
   padding: 0; /* 2 */
 }
 
 /**
  * Correct the cursor style of increment and decrement buttons in Chrome.
  */
 
 [type="number"]::-webkit-inner-spin-button,
 [type="number"]::-webkit-outer-spin-button {
   height: auto;
 }
 
 /**
  * 1. Correct the odd appearance in Chrome and Safari.
  * 2. Correct the outline style in Safari.
  */
 
 [type="search"] {
   -webkit-appearance: textfield; /* 1 */
   outline-offset: -2px; /* 2 */
 }
 
 /**
  * Remove the inner padding in Chrome and Safari on macOS.
  */
 
 [type="search"]::-webkit-search-decoration {
   -webkit-appearance: none;
 }
 
 /**
  * 1. Correct the inability to style clickable types in iOS and Safari.
  * 2. Change font properties to `inherit` in Safari.
  */
 
 ::-webkit-file-upload-button {
   -webkit-appearance: button; /* 1 */
   font: inherit; /* 2 */
 }
 
 /* Interactive
    ========================================================================== */
 
 /*
  * Add the correct display in Edge, IE 10+, and Firefox.
  */
 
 details {
   display: block;
 }
 
 /*
  * Add the correct display in all browsers.
  */
 
 summary {
   display: list-item;
 }
 
 /* Misc
    ========================================================================== */
 
 /**
  * Add the correct display in IE 10+.
  */
 
 template {
   display: none;
 }
 
 /**
  * Add the correct display in IE 10.
  */
 
 [hidden] {
   display: none;
 }

 ul, li { list-style: none; }
